Saw-mill set-works



(No Model:)

F. W 000K. SAW MILL SET WORKS.

No. 410,349. Patented Sept. 3, 1889.

UNITED STATES PATENT CFFICE.

FREDERICK IV. COCK, OF FRANCISCO, CALIFORNIA.

SAW-MILL SET-WORKS.

SPECIFICATION forming part of Letters Patent No. 410,349, datedSeptember 3, 1889.

Application filed April 24, 1889. Serial No. 308,438. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK W. 000K, of the city and county of SanFrancisco, State of California, have invented an Improvement in Saw-MillSet-WVorks; and I hereby declare the following to be a full, clear, andexact description of the same.

My invention relates to the class of sawmill set-works, and especiallyto the lever mechanism by which the set-works are operated; and myinvention consists in the hereinafter-described novel mechanism forobtaining accuratefractional movements of the works.

The object of my invention is to provide a simple and effective meansfor readily and accurately limiting and defining the movement of theset-lever.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is aside elevation of my improvement. Fig. 2is a plan of the same.

A is one of the sills or beams of the saw-mill carriage.

Bis the set-shaft,which extends on one side longitudinally of saidcarriage and communicates movement to the screws at each end, whichoperate the knees of the set-works, it being unnecessary herein to showsaid screws and knees.

Upon the set-shaft and suitably connected therewith and arranged inrelation thereto is,

the mechanism represented by D, and which affects the movement of theset-shaft, the particular description and operation of said mechanismbeing unnecessary, as it forms no part of my invention.

E is the vibrating setlever which operates the mechanism D. Its lowerend or foot is double or forked and extends up on each side of theset-bar F. This bar is pivoted at one end at the point f and has on itsother end a handle portion f, provided with a spring-controlled pawl f*,the end of which is adapted to engage the curved rack G, which is fixedin position and is provided with a series of holes g. end the series ofshoulders or stops f which are properly graduated, as shown. I

Between the forked foot of the set-lever is a stop-block e, which isadapted to come in- The setbar F has near its pivoted contact with anyof the shoulders or stops f of the set-bar F. Now, by freeing the pawlend of the bar F and moving it up or down 011 the rack G the shouldersor stops of said barF are thrown severally into the path of thestop-block e of the set-lever. For example, if a one-inch board is to bemade, the bar F is raised on its pivotal center until its pawl f engagesthe uppermost hole g of the rack G,

and in this position the first shoulder or stop of bar F is thrown intothe path of the stopblock 6 of the lever E, thereby limiting themovement of the lever. If a sixteenth is to be added, the pawl end ofthe set-bar F is dropped down to the second hole of the rack G, so thatthe second shoulder or stop of the bar is thrown into the path of thestop-block e of the lever E, its first shoulder or stop being droppedlow enough to allow said stop-block to pass it. Therefore thelever canmove a farther distance, so as to set the knees up a sixteenth more, andso on throughout the series, the bar F moving down on its pivotalcenter,

lowering all the preceding shoulders or stops and bringing the properone into the path of the stop-block, this movement being determined bythe engagement of the handle end of the bar with the fixed rack G, theholes of which are properly separated and graduated to correspond withthe shoulders or stops of said bar.

Pivoted upon a bolt passing through the .lever E is an approximatelyU-shaped stoppiece H, having its hub formed with notches which areengaged by a spring 71, the said piece carrying also at its free end ascrew and adjusting-nut, as shown. The piece H is thrown into use bydropping its end down, so that it will come in contact with theshoulders or stops of the set-bar F, thus limiting the movement of thelever E.

I is the fixed limiting-stop for defining the back limit of the lever.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In saw-mill set-works, and in combination with the vibratingsetlever, the pivoted swinging set-bar having a series of shoulders orstops, at fixed rack for limiting and defining the movement of theset-bar, and a stop on the set lever for coming in contact with any ofthe shoulders or stops of the setbar, according to the position of saidbar, substantially as described.

2. In saw-mill set-works, and in combination with the vibratingset-lever, the pivoted swinging set-bar having the series of shouldersor stops, the fixed rack having a series of holes corresponding with theshoulders or stops of the set-bar, a pawl on the end of the set-baradapted to engage the holes of the fixed rack, and a stop on theset-lever for coming in contact with any of the shoulders or stops ofthe set-bar, according to the position of said bar, substantially asdescribed.

3. In saw-mill set-works, and in combination with the set-lever having aforked or divided lower portion, the pivoted swinging settion of thelever for coming in contact with any of the shoulders or stops of theset-bar, according to its position, substantially as described.

4. In saw-mill set works, and in combination with the vibratingset-lever having a stop-block, the pivoted swinging set-bar having aseries of shoulders or stops with which the stop-block of the lever isadapted to come in contact, the fixed rack for engaging the end of theset-bar and limiting and defining its movement, and the pivoted swingingstoppiece on the lever adaptedto be thrown down to come in contact withthe shoulders 01' stops of the set-bar to provide for the saw-kerf,substantially as described.

In witness whereof I have hereunto set my hand.

FREDERICK W. COOK.

Witnesses:

S. H. NOURSE, H. 0. LEE.

